Rivet-shearing machine.



D. T. GOODMAN.

RIVET SHEARING MACHINE.

APPLICATION FILED rE.24. I9I5.

Patented Deo. 7, 191.5.

COLUMBIA vLANouRAPn CIJ-.WASHUIGIONY D. c,

etti

DAVID T. eooDIvIAN, or AL'rooNa PENNSYLVANIA.

RIVET-SHEARING MACHINE. Y

Specification of Letters Patent.

Patented Dec. 7, i915.

Application led February 24, 1915. Serial No. 10,315.

To @ZZ LU/wm it may concern.'

Be it known thatl', DAVID T. GOODMAN, a citizen of the United States, residing at ltoona, in. the county of Blair, State of ennsylvania, have invented certain new and useful improvements in Rivet-Shearing Machines; and l do hereby declare the following to be a full, clear, and eXact description of the invention, suchas will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to rivet shearing machines.

rlhe object of the invention resides in the provision of a rivet shearing machine embodying an improved construction whereby rivets may be easily and quickly sheared, the machine being particularly adapted for successively shearing rivets arranged in vertical rows as found in the construction of steel railway cars.

A further object of the invention resides in the provision oi a machine of the type named wherein the cutter, in operating upon vertical rows of rivets, after shearing one rivet will automatically move into cutting relation to the next rivet to be sheared.

lilith the above and other objects in view the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully described and particularly pointed out in the appended claims.

ln describing` the invention in detail reference will be had to the accompanyingl drawings wherein like characters of reference denote corresponding parts in the several views, and in which- Y Figure 1 is a side elevation of a rivet shearing machine constructed in accordance with the invention; Fig. 2, a plan view thereof; Fig. 3, a section on the line 3-3 of Fig. 1; Fig. 4, a section on the line 4-4 of 1; F ig. 5, a section on the line 5-5 of Fig. 1; and Fig. 6, a perspective view of a key adapted to be used in connection with the machine under certain conditions.

Referring to the drawings the improved machine is shown as comprising a frame A which is suitably supported upon adjustable legs 10. The frame A includes a base member 11 and parallel spaced vertical members 12 and 13. Pivoted between the members 12 and 13 is an operating lever 14 one end of which is connected with an air engine 15 or other power, while the other end theremachine.

of is provided with an elongated opening for a purpose that will presently appear. The improved shearing machine further comprises a shearing bar 17 which carries a bolt or pin 18 engaged through the opening 16, the lower end of the bar 17 being sndable in an opening 19 in ber 11. This bar 17 is provided on its forward side with a plurality of teeth 2O and further provided with a plurality oi"- transverse passages 21, the purpose of said teeth and passages presently appearing. Slidably mounted on the bar 17 is a shearing head B of substantially U-shaped cross section and including arms 22 and 23 the free ends of which terminate respectively in shoes 24 which bear against respective vertical members 12 and 13. Pivoted to the head B is a pawl 25 which cooperates with the teeth 20 as will be obvious. Suitably keyed to the head B is a cutter 26 which directly engages the rivets during-the operation of the In order to hold the work in proper relation to the cutter 26 there is formed on the base member 11 a lug 27. Slidably mounted on the upper side of this base member 11 are bars 28 and 29 provided respectively with upwardly directed terminals 30 which constitute clamping jaws. These bars 2S and 29 are provided with openings 31 which are disposed over an openingl 32 in the base member 11. Wedges 33 are adapted to be selectively inserted through the openings 31 and then driven home so as to slide the jaws 30 toward the lug 27 and clamp the work between said jaws and lug, such work being indicated generally at C. j

In the operation of the machine the head will descend until the cutter engages the first or uppermost rivet. The engine 15 is then operated to elevate the adjacent end of the lever 14e and thus force the bar 17 downwardly. Owing to the engagement between the pawl 25 and the teeth 20 downward movement of the bar 17 will effect corresponding movement of the head B and the cutter 26 and shear the uppermost rivet. As soon as the uppermost rivet is sheared the head B will move downwardly under the influence oi' gravity until the cutter 26 engages the next rivet. This operation is repeated until all of the rivets are 'sheared 1n cases where the pawl 25 is not disposed in proper relation to a tooth 2O when the cutter 26 engages a rivet a stepped key 3ft the base memi is insertedthrough a passage 21 so as to engage the upper edges of the arms 22 and 23. When thekey iS so applied anj,7 dovvnward movement of the bar 17 imparted by the lever 14 Will produce a corresponding shearing movement of the cutter 26.

What is claimed is l. A rivet shearing machine comprising a trame,- a shearing' bar slidably mounted on the frame, a shearing head siidable 0n said bar, means for slidingsaid bar, and means for lockingthe shearing' head against movement on the bar in a direction opposite to the shearing movement of the bar.`

2. A rivet shearing;` machine comprising a Jframe, a shearing har siidably mounted on the frame, means for sliding said bar, a piuraiity of teeth formed on said bar, a shearing head siidahle on the bar, and a paWl pivoted to said head and coperating With said teeth to lock the shearing` head against movement on the bar in a direction opposite to the shearing movement of the bar.

A rivet shearing machine comprising a trame, a shearing bar slidabiy mounted on the frame, a lever pivoted on the frame and having' one end connected with the shearingr bar, a motor for movingr said lever to impart shearing movement to the bar, a shearing' head siidabie on the bar, and means for locking` the shearing head against movement on the bar in a direction opposite to the shearing movement of the bar.

In testimony whereof, I afix my signature. in the presence of two Witnesses.

JAMES Gmsnn, J ACOB A. IVALTERS.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents` Washington, D. C. 

